<template>
	<div class="syslogdiff-container">
		<el-card shadow="hover" :body-style="{ padding: '5px 5px 0 5px', display: 'flex', width: '100%', height: '100%', alignItems: 'start' }">
			<el-form :model="state.queryParams" ref="queryForm" :show-message="false" :inlineMessage="true" label-width="auto" style="flex: 1 1 0%">
				<el-row :gutter="10">
					<el-col class="mb5" :xs="24" :sm="12" :md="8" :lg="6" :xl="6">
						<el-form-item label="开始时间" prop="name">
							<el-date-picker v-model="state.queryParams.startTime" type="datetime" placeholder="开始时间" value-format="YYYY-MM-DD HH:mm:ss" :shortcuts="shortcuts" class="w100" />
						</el-form-item>
					</el-col>
					<el-col class="mb5" :xs="24" :sm="12" :md="8" :lg="6" :xl="6">
						<el-form-item label="结束时间" prop="code">
							<el-date-picker v-model="state.queryParams.endTime" type="datetime" placeholder="结束时间" value-format="YYYY-MM-DD HH:mm:ss" :shortcuts="shortcuts" class="w100" />
						</el-form-item>
					</el-col>
				</el-row>
			</el-form>

			<el-divider style="height: calc(100% - 5px); margin: 0 10px" direction="vertical" />

			<el-row>
				<el-col>
					<el-button-group>
						<el-button type="primary" icon="ele-Search" @click="handleQuery(true)" v-auth="'sysLogDiff/page'" :loading="options.loading"> 查询 </el-button>
						<el-button icon="ele-Refresh" @click="resetQuery" :loading="options.loading"> 重置 </el-button>
					</el-button-group>
				</el-col>
			</el-row>
		</el-card>

		<el-card class="full-table" shadow="hover" style="margin-top: 5px">
			<vxe-grid ref="xGrid" class="xGrid-style" v-bind="options" v-on="gridEvents">
				<template #toolbar_buttons> </template>
				<template #toolbar_tools>
					<vxe-button circle icon="vxe-icon-upload" name="导入" code="showImport" class="mr12" />
				</template>
				<template #empty>
					<el-empty :image-size="200" />
				</template>
				<template #row_content="{ row }">
					<el-card header="差异数据" style="width: 100%; margin: 5px">
						<el-table :data="item.columns" v-for="item in row.diffData" :key="item.tableName" :span-method="(data: any) => diffTableSpanMethod(data, item)" border style="width: 100%">
							<el-table-column label="表名" width="200">
								<template #default>
									{{ item.tableName }}
									<br />
									{{ item.tableDescription }}
								</template>
							</el-table-column>
							<el-table-column prop="columnName" label="字段描述" width="300" :formatter="(row: any) => `${row.columnName} - ${row.columnDescription}`" />
							<el-table-column prop="beforeValue" label="修改前" show-overflow-tooltip>
								<template #default="columnScope">
									<pre v-html="markDiff(columnScope.row.beforeValue, columnScope.row.afterValue, true)" />
								</template>
							</el-table-column>
							<el-table-column prop="afterValue" label="修改后" show-overflow-tooltip>
								<template #default="columnScope">
									<pre v-html="markDiff(columnScope.row.beforeValue, columnScope.row.afterValue, false)" />
								</template>
							</el-table-column>
						</el-table>
						<el-table :data="[{ sql: row.sql }]" border style="width: 100%">
							<el-table-column prop="sql" label="SQL语句">
								<template #default>
									<pre class="sql" v-html="formatSql(row.sql)"></pre>
								</template>
							</el-table-column>
						</el-table>
						<el-table :data="row.parameters" border style="width: 100%">
							<el-table-column prop="parameterName" label="参数名" width="200" />
							<el-table-column prop="typeName" label="类型" width="100" />
							<el-table-column prop="value" label="值" />
						</el-table>
					</el-card>
				</template>
				<!-- <template #row_buttons="{ row }">
					<el-button icon="ele-InfoFilled" text type="primary" @click="handleView({ row })">详情</el-button>
				</template> -->
			</vxe-grid>
		</el-card>

		<!-- <el-dialog v-model="state.visible" draggable overflow destroy-on-close>
			<template #header>
				<div style="color: #fff">
					<el-icon size="16" style="margin-right: 3px; display: inline; vertical-align: middle"> <ele-Document /> </el-icon>
					<span> 日志详情 </span>
				</div>
			</template>
			<el-tabs v-model="state.activeTab">
				<el-tab-pane label="日志消息" name="message">
					<el-scrollbar height="calc(100vh - 250px)">
						<pre>{{ state.detail.message }}</pre>
					</el-scrollbar>
				</el-tab-pane>
				<el-tab-pane label="SQL" name="sql" :lazy="true">
					<el-scrollbar height="calc(100vh - 250px)">
						<vue-json-pretty :data="state.detail.sql" showLength showIcon showLineNumber showSelectController />
					</el-scrollbar>
				</el-tab-pane>
				<el-tab-pane label="参数" name="parameters" :lazy="true">
					<el-scrollbar height="calc(100vh - 250px)">
						<vue-json-pretty :data="state.detail.parameters" showLength showIcon showLineNumber showSelectController />
					</el-scrollbar>
				</el-tab-pane>
				<el-tab-pane label="操作前记录" name="beforeData" :lazy="true">
					<el-scrollbar height="calc(100vh - 250px)">
						<vue-json-pretty :data="state.detail.beforeData" showLength showIcon showLineNumber showSelectController />
					</el-scrollbar>
				</el-tab-pane>
				<el-tab-pane label="操作后记录" name="afterData" :lazy="true">
					<el-scrollbar height="calc(100vh - 250px)">
						<vue-json-pretty :data="state.detail.afterData" showLength showIcon showLineNumber showSelectController />
					</el-scrollbar>
				</el-tab-pane>
			</el-tabs>
		</el-dialog> -->
	</div>
</template>

<script lang="ts" setup name="sysLogDiff">
import { onMounted, reactive, ref } from 'vue';
import { useDateTimeShortCust } from '/@/hooks/dateTimeShortCust';

import { VxeGridInstance, VxeGridListeners, VxeGridPropTypes } from 'vxe-table';
import { useVxeTable } from '/@/hooks/useVxeTableOptionsHook';
import { Local } from '/@/utils/storage';

// import VueJsonPretty from 'vue-json-pretty';
// import 'vue-json-pretty/lib/styles.css';
// import { StringToObj } from '/@/utils/json-utils';

import { getAPI } from '/@/utils/axios-utils';
import { SysLogDiffApi } from '/@/api-services/api';
import { SysLogDiff, PageLogInput } from '/@/api-services/models';

const xGrid = ref<VxeGridInstance>();
const shortcuts = useDateTimeShortCust();
const state = reactive({
	queryParams: {
		startTime: undefined,
		endTime: undefined,
	},
	localPageParam: {
		pageSize: 50 as number,
		defaultSort: { field: 'id', order: 'desc', descStr: 'desc' },
	},
	visible: false,
	detail: {
		message: '' as string | null | undefined,
		sql: undefined,
		parameters: undefined,
		afterData: undefined,
		beforeData: undefined,
	},
	activeTab: 'message',
});

// 本地存储参数
const localPageParamKey = 'localPageParam:sysDiffLog';
// 表格参数配置
const options = useVxeTable<SysLogDiff>(
	{
		id: 'sysDiffLog',
		name: '差异日志',
		columns: [
			// { type: 'checkbox', width: 40 },
			{ type: 'seq', title: '序号', width: 60, fixed: 'left' },
			{ type: 'expand', width: 40, slots: { content: 'row_content' } },
			{ field: 'diffType', title: '差异操作', minWidth: 150, showOverflow: 'tooltip' },
			// { field: 'sql', title: 'Sql语句', minWidth: 150, showOverflow: 'tooltip' },
			// { field: 'parameters', title: '参数', minWidth: 150, showOverflow: 'tooltip' },
			{ field: 'elapsed', title: '耗时(ms)', minWidth: 150, showOverflow: 'tooltip' },
			{ field: 'message', title: '日志消息', minWidth: 150, showOverflow: 'tooltip' },
			// { field: 'beforeData', title: '操作前记录', minWidth: 150, showOverflow: 'tooltip' },
			// { field: 'afterData', title: '操作后记录', minWidth: 150, showOverflow: 'tooltip' },
			{ field: 'businessData', title: '业务对象', minWidth: 150, showOverflow: 'tooltip' },
			{ field: 'createTime', title: '操作时间', minWidth: 100, showOverflow: 'tooltip' },
			// { title: '操作', fixed: 'right', width: 100, showOverflow: true, slots: { default: 'row_buttons' } },
		],
	},
	// vxeGrid配置参数(此处可覆写任何参数)，参考vxe-table官方文档
	{
		// 代理配置
		proxyConfig: { autoLoad: true, ajax: { query: ({ page, sort }) => handleQueryApi(page, sort) } },
		// 排序配置
		sortConfig: { defaultSort: Local.get(localPageParamKey)?.defaultSort || state.localPageParam.defaultSort },
		// 分页配置
		pagerConfig: { pageSize: Local.get(localPageParamKey)?.pageSize || state.localPageParam.pageSize },
		// 工具栏配置
		toolbarConfig: { export: false },
	}
);

// 页面初始化
onMounted(() => {
	state.localPageParam = Local.get(localPageParamKey) || state.localPageParam;
});

// 查询api
const handleQueryApi = async (page: VxeGridPropTypes.ProxyAjaxQueryPageParams, sort: VxeGridPropTypes.ProxyAjaxQuerySortCheckedParams) => {
	const params = Object.assign(state.queryParams, { page: page.currentPage, pageSize: page.pageSize, field: sort.field, order: sort.order, descStr: 'desc' }) as PageLogInput;
	return getAPI(SysLogDiffApi).apiSysLogDiffPagePost(params);
};

// 查询操作
const handleQuery = async (reset = false) => {
	options.loading = true;
	reset ? await xGrid.value?.commitProxy('reload') : await xGrid.value?.commitProxy('query');
	options.loading = false;
};

// 重置操作
const resetQuery = async () => {
	state.queryParams.startTime = undefined;
	state.queryParams.endTime = undefined;
	await xGrid.value?.commitProxy('reload');
};

// 表格事件
const gridEvents: VxeGridListeners<SysLogDiff> = {
	// 只对 pager-config 配置时有效，分页发生改变时会触发该事件
	async pageChange({ pageSize }) {
		state.localPageParam.pageSize = pageSize;
		Local.set(localPageParamKey, state.localPageParam);
	},
	// 当排序条件发生变化时会触发该事件
	async sortChange({ field, order }) {
		state.localPageParam.defaultSort = { field: field, order: order!, descStr: 'desc' };
		Local.set(localPageParamKey, state.localPageParam);
	},
};

// // 查看详情
// const handleView = async ({ row }: any) => {
// 	const { data } = await getAPI(SysLogDiffApi).apiSysLogDiffDetailIdGet(row.id);
// 	state.activeTab = 'message';
// 	state.detail.message = data?.result?.diffType;
// 	// 如果请求参数是JSON字符串，则尝试转为JSON对象
// 	state.detail.sql = StringToObj(data?.result?.sql);
// 	state.detail.parameters = StringToObj(data?.result?.parameters);
// 	state.detail.afterData = StringToObj(data?.result?.afterData);
// 	state.detail.beforeData = StringToObj(data?.result?.beforeData);
// 	state.visible = true;
// };

// 合并差异表格表名列
const diffTableSpanMethod = ({ columnIndex, rowIndex }: any, itme: any) => {
	if (columnIndex === 0) {
		if (rowIndex === 0) {
			return {
				rowspan: itme.columns.length,
				colspan: 1,
			};
		} else {
			return {
				rowspan: 0,
				colspan: 0,
			};
		}
	}
};

const formatSql = (sql: string) => {
	// 移除多余的空格
	let formatted = sql.replace(/\s+/g, ' ').trim();

	// 替换反引号包裹的字段
	formatted = formatted.replace(/`([^`]+)`/g, '<span class="sql-backtick">`$1`</span>');

	// 替换@参数
	formatted = formatted.replace(/(@\w+)/g, '<span class="sql-param">$1</span>');

	// 替换SQL关键字
	formatted = formatted.replace(
		/\b(INSERT|DELETE|UPDATE|SELECT|FROM|SET|JOIN|ON|AND|OR|IN|NOT|IS|NULL|WHERE|TRUE|FALSE|LIKE|ORDER BY|GROUP BY|HAVING|LIMIT|AS|WITH|CASE|WHEN|THEN|ELSE|END)\b/g,
		'<span class="sql-keyword">$1</span>'
	);

	// 智能换行
	// 在SET和VALUES后面添加换行
	formatted = formatted.replace(/(SET|VALUES)(?=\s)/g, '$1\n    ');
	// 在逗号后面添加换行，除非是最后一个逗号
	formatted = formatted.replace(/,(?![^]*?,\s*$)(?=[^\s])/g, ',\n    ');
	// 在WHERE前添加换行，如果WHERE前面不是逗号
	formatted = formatted.replace(/([\s\S]+)(WHERE)/g, '$1\n$2');

	// 移除由于换行添加的多余空格
	formatted = formatted.replace(/\n\s*\n/g, '\n');

	return formatted;
};

function lcs(s1: string, s2: string): number[][] {
	const m = s1.length;
	const n = s2.length;
	const dp = Array.from({ length: m + 1 }, () => Array(n + 1).fill(0));

	for (let i = 1; i <= m; i++) {
		for (let j = 1; j <= n; j++) {
			if (s1[i - 1] === s2[j - 1]) {
				dp[i][j] = dp[i - 1][j - 1] + 1;
			} else {
				dp[i][j] = Math.max(dp[i - 1][j], dp[i][j - 1]);
			}
		}
	}
	return dp;
}

function markDiff(oldData: any, newData: any, returnOld: boolean): string {
	if (typeof oldData !== 'string' || typeof newData !== 'string') {
		return `<span class="diff-${returnOld ? 'delete' : 'add'}">${returnOld ? oldData : newData}</span>`;
	}

	const dp = lcs(oldData, newData);
	const m = oldData.length;
	const n = newData.length;
	let oldIndex = m,
		newIndex = n;
	const diffResult: { type: string; content: string }[] = [];

	while (oldIndex > 0 || newIndex > 0) {
		if (oldIndex > 0 && newIndex > 0 && oldData[oldIndex - 1] === newData[newIndex - 1]) {
			diffResult.push({ type: 'unchanged', content: oldData[oldIndex - 1] });
			oldIndex--;
			newIndex--;
		} else if (newIndex > 0 && (oldIndex === 0 || dp[oldIndex][newIndex - 1] >= dp[oldIndex - 1][newIndex])) {
			diffResult.push({ type: 'add', content: newData[newIndex - 1] });
			newIndex--;
		} else {
			diffResult.push({ type: 'delete', content: oldData[oldIndex - 1] });
			oldIndex--;
		}
	}

	const result = diffResult
		.reverse()
		.map((chunk) => {
			switch (chunk.type) {
				case 'add':
					return `<span class="diff-add">${chunk.content}</span>`;
				case 'delete':
					return `<span class="diff-delete">${chunk.content}</span>`;
				default:
					return chunk.content;
			}
		})
		.join('');

	return result.replace(returnOld ? /<span class="diff-add">(.*?)<\/span>/g : /<span class="diff-delete">(.*?)<\/span>/g, '');
}
</script>

<style lang="scss" scoped>
.el-popper {
	max-width: 60%;
}
:deep(pre.sql) {
	white-space: pre-wrap;
	.sql-param {
		color: green;
	}
	.sql-keyword {
		color: blue;
	}
	.sql-backtick {
		color: blueviolet;
	}
	span.diff-unchanged {
		color: inherit;
	}
	span.diff-delete {
		color: red;
	}
	span.diff-add {
		color: green;
	}
}
:deep(pre) {
	span.diff-delete {
		color: red;
	}
	span.diff-add {
		color: green;
	}
}
</style>
